Set screw hubs offer a cheap way to attach hub mount gears or wheels to a shaft. The hub offers 4 equally spaced 6-32 tapped holes utilizing the 0.77\" hub pattern and is precision machined from 6061 T6 aluminum. The set-screw is 10-32 and uses a 3\/32\u201d hex key. This hub has a 3\/8\" bore.\n\n